1 /*
2 * Copyright (C) 2008, VMware, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12 * NON INFRINGEMENT. See the GNU General Public License for more
13 * details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 */
20 #ifndef _ASM_X86_HYPERVISOR_H
21 #define _ASM_X86_HYPERVISOR_H
22
23 #ifdef CONFIG_HYPERVISOR_GUEST
24
25 #include <asm/kvm_para.h>
26 #include <asm/xen/hypervisor.h>
27
28 /*
29 * x86 hypervisor information
30 */
31 struct hypervisor_x86 {
32 /* Hypervisor name */
33 const char *name;
34
35 /* Detection routine */
36 uint32_t (*detect)(void);
37
38 /* Adjust CPU feature bits (run once per CPU) */
39 void (*set_cpu_features)(struct cpuinfo_x86 *);
40
41 /* Platform setup (run once per boot) */
42 void (*init_platform)(void);
43
44 /* X2APIC detection (run once per boot) */
45 bool (*x2apic_available)(void);
46 };
47
48 extern const struct hypervisor_x86 *x86_hyper;
49
50 /* Recognized hypervisors */
51 extern const struct hypervisor_x86 x86_hyper_vmware;
52 extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
53 extern const struct hypervisor_x86 x86_hyper_xen_hvm;
54 extern const struct hypervisor_x86 x86_hyper_kvm;
55
56 extern void init_hypervisor(struct cpuinfo_x86 *c);
57 extern void init_hypervisor_platform(void);
58 extern bool hypervisor_x2apic_available(void);
59 #else
init_hypervisor(struct cpuinfo_x86 * c)60 static inline void init_hypervisor(struct cpuinfo_x86 *c) { }
init_hypervisor_platform(void)61 static inline void init_hypervisor_platform(void) { }
hypervisor_x2apic_available(void)62 static inline bool hypervisor_x2apic_available(void) { return false; }
63 #endif /* CONFIG_HYPERVISOR_GUEST */
64 #endif /* _ASM_X86_HYPERVISOR_H */
65